Thill-coupling



(No Model.)

D. MURRAY.

, THILL COUPLING. J .N 357,221; Patented Feb. a, 1887;

N. PETERS, Fholo-iilhngnpher, Wzuhi ooooo c.

UNITED. STATES PATENT OFFICE.

DANIEL MURRAY, OF SALEM, MASSACHUSETTS.

THlLL-COUPLlNG.

SPECIFICATION forming part of Letters Patent No. 357,221, dated February 8, 1887.

' Application filed July 21, 1886. Serial No. 208,690. (No model.)

To all whom it may concern.-

Be -itv known that I, DANIEL MU RAY, a citizen of the United States, and a resident of Salem, in the county of Essex and State of Massachusetts, have invented new and useful Improvements in'Shaft-Oouplings, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to improvements in shaft-couplings, and it is carried out as follows, reference being had to the accompanying drawings, wherein- Figure 1 represents a plan view of the in- .vention, showing the cap as removed. Fig. 2 represents a longitudinal section on the line A B, shown'in Fig. 1; and Fig. 3 represents a cross-section on the line C D, also shown in Fig. 1.

Similar letters refer to similar parts wherever they occur on the different parts of the drawings.

a represents the clasp, having the downwardly-proj ecting screws a a, as usual ,and nuts a a, by means of which and the yoke b the clasp is firmly secured to the carriageaxle in the ordinary manner. In one piece with the clasp a is made the forwardly-projecting bearing-block a provided with a cap, 0, that is secured to the block a by means of screw-bolts d (I, passing lo'osely through perforations in the cap a and screwed into and through tapped perforations in the block a as shown in Fig. 2, and furthermore secured to the said block by means of check-nuts d d, as shown, to prevent their beingloosened'by thejar of the carriage-axle.

6 represents the shaft-iron,secured by means of bolts to the shaft, as usual. In one piece .with the shaft-iron e is made the ball e, resting in half-spherical sockets a 0, made, respectively, in the bearing-block a and cap 0, as shown, said ball having horizontal cylindrical trunnions e 0, adapted to turn in corresponding reccsses in the block a and cap 0, as shown in Figs. 1 and 3, such trunnions forming extensions of the rear forked end of the shaft-iron e, as shown in Fig. 1.

E is a perforation in the shaft-iron e, between its rear end and the balle, to allow the shaft-iron to be swung freely up and down .without interfering with the front edges of the block a and cap 0.

e is an annular groove on the ball e, as shown in the drawings, such groove being semicircular, or nearly so, in form, and adapted to receive the cylindrical portion of the respective fastening-bolts d d, as shown in Figs. 1 and 2, and by this arrangement the ball 6 is retained in the sockets c a with a proper frictional resistance to prevent the common rattling.

In case the ball 0 or its sockets should become worn, the cap 0 may be removed and its under side or the upper side of block a ground off in proportion to the wear, and the different parts put together, as shown in Fig. 2.

As an equivalent means of adjustment, a thin washer or plate may originally be confined between the cap and block, which washer may be filed or ground off from time to time to compensate for the wear of the ball in its sockets.

The shanks of the bolts d (Z may be made slightly tapering, instead of cylindrical, with out departing from the essence of my invention.

This my invention is very simple in construction and is entirely devoid of steel or rubber springs so common in most of the wellknown shaft-couplings. It is positive in its action, very strong and wear-resisting, easy of lubrication, the groove in the ball serving as an oil receptacle to contain a proper amount of lubricant, and by the device as described In testimony whereof I have signed my name,

to this specificatiomin the presence of two subscribing witnesses, on this 7th day of July, A.

. DANIEL MURRAY. lVitnesses:

ALBAN ANDREN, WILLIAM B. FLANAGAN.' 

